Apple releases new iPhones every fall, guaranteeing that a massive number of old iPhones will be traded in or sold. The rush will dramatically change the market for used iPhones, so I wanted to help you stay ahead of the curve and get the best deal possible. Having just sold my own iPhone 6 Plus to upgrade to a newer model, I have some strong opinions about your smartest options.

Below, I’ve put together a guide to some of the iPhone selling and trade-in options you should consider. There’s no single “right” answer, since some options trade greater convenience for lower prices, and others have higher prices but greater risks or hassles. You can choose the one that’s best for your needs, but whatever you do, make your choice before iPhone values begin to fall…